Non-local Andreev reflection through Andreev molecular states in graphene Josephson junctions
arXiv:2208.11536 · doi:10.1088/2053-1583/acce4b
Abstract
We propose that a device composed of two vertically stacked monolayer graphene Josephson junctions can be used for Cooper pair splitting. The hybridization of the Andreev bound states of the two Josephson junction can facilitate non-local transport in this normal-superconductor hybrid structure, which we study by calculating the non-local differential conductance. Assuming that one of the graphene layers is electron and the other is hole doped, we find that the non-local Andreev reflection can dominate the differential conductance of the system. Our setup does not require the precise control of junction length, doping, or superconducting phase difference, which could be an important advantage for experimental realization.
Main text + supplementary
References in corpus (12)
- STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride
- Quantum-limited shot noise in graphene
- Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures
- Josephson effect in ballistic graphene
- Near-unity Cooper pair splitting efficiency
- How close can one approach the Dirac point in graphene experimentally?
- Crossed Andreev reflection in a graphene bipolar transistor
- Cooper Pair Splitting by means of Graphene Quantum Dots
- Tunable superconducting coupling of quantum dots via Andreev bound states in semiconductor-superconductor nanowires
- Excitation gap of a graphene channel with superconducting boundaries
- Nonlocal conductance spectroscopy of Andreev bound states in gate-defined InAs/Al nanowires
- Keldysh study of point-contact tunneling between superconductors